Chinese gall (Wu Bei zi) and Skin Lightening (Whitening)

 Posted by Chantel Martiromo  

Human skin pigmentation is the result of natural selection evolved to prevent damage to skin through regulation of ultraviolet radiated penetration depending to the production of melanin in the skin cells.
1. Hypo-pigment
a. Vitiligo is defined as a condition of destruction of cells that give your skin its color, causing white patches on your skin.
b. Albinism is a congenital disorder causes of complete or partial absence of pigment in the skin, hair and eyes as a result of restriction of the skin cells from producing melanin
2.Hyper pigment is a result of over production of pigments of certain cells in the skin, causing skin darkening in some area, such as tan or brown patches, commonly on the facial skin
3. Skin discoloring is a result of discoloring your skin in specific spots or very widespread
4. Chloasma is the appearance of brown patches of pigmentation on the forehead, cheeks, and neck
due to hormonal change during pregnancy.
5. Melasma happens to women who have fluctuation of hormones, are taking birth control pills and certain medications. with brownish-grayish patches on the skin, most often on the cheek.
Epidemiological studies, linking herbal medicine in skin lighting may have produced certain interest results(a)(b)(c).
Chinese gall (Wu Bei zi)
Wu Bei Zi is also known as Chinese Gall. The  sour, tart and cold herb has been used in TCM to treat chronic cough, chronic diarrhea with or without infection, spermatorrhea, night sweating, bleeding not during menses, etc., as it restrains Lungs, moves Fire downwards, strengthens the Intestines andthe Essence, prevents sweating, stops bleeding, etc. by enhancing the functions of lung, large intestine and kidney channels.
Chinese gall extract in the testing against mushroom tyrosinase activity inhibition, using ultraviolet A (UVA) or alpha-melanocyte-stimulating hormone (alpha-MSH) to stimulate B16 cells showed a promising effect in inhibition of melanin biosynthesis associated with hyperpigmentation in a dose-dependent manner, according to National Chiayi University(7). In Mouse melanocyte cell lines, water extract of Galla Chinensis, showed to exhibit higher depigmentation activity, affecting lower tyrosinase activity(8).

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References
(a) Tyrosinase modulation by five Rwandese herbal medicines traditionally used for skin treatment by Kamagaju L¹, Morandini R, Bizuru E, Nyetera P, Nduwayezu JB, Stévigny C, Ghanem G, Duez P.(PubMed)
(b) An ethnobotanical survey of medicinal plants used in Rwanda for voluntary depigmentation by Kamagaju L¹, Bizuru E, Minani V, Morandini R, Stévigny C, Ghanem G, Duez P.(PubMed)
(c) Tyrosinase inhibition by extracts and constituents of Sideroxylon inerme L. stem bark, used in South Africa for skin lightening by Momtaz S¹, Mapunya BM, Houghton PJ, Edgerly C, Hussein A, Naidoo S, Lall N.(PubMed))
(7) Melanogenesis inhibition by gallotannins from Chinese galls in B16 mouse melanoma cells by Chen LG¹, Chang WL, Lee CJ, Lee LT, Shih CM, Wang CC.(PubMed)
(8) Depigmentation of melanocytes by the treatment of extracts from traditional Chinese herbs: a cell culture assay by Zhong S¹, Wu Y, Soo-Mi A, Zhao J, Wang K, Yang S, Jae-Ho Y, Zhu X.(PubMed)